Misdreavus, whether owned by a Trainer or not, are nocturnal creatures that enjoy pranking humans and other Pokémon for its own amusement, usually giving them jump-scares or eerily screeching in a wailing manner. They may even go as far as pulling and biting a person's hair just to entertain themselves. When their pranks succeed, they cannot help but give out a gloating grin. Nonetheless, they cannot deal with people who are braver and more courageous, so they can get outwitted easily.